Home / 1,210.10-1,814.34-479.30

Finding the Fourth Proportional to 1,210.10, 1,814.34 and 479.30

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Solution

The fourth proportional to 1,210.10, 1,814.34 and 479.30 is: 718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.10 : 1,814.34 = 479.30 : x
  2. Step 2: Convert to fraction form
    1,210.10/1,814.34 = 479.30/x
  3. Step 3: Cross multiply
    1,210.10x = 1,814.34 × 479.30
  4. Step 4: Simplify right side
    1,210.10x = 869,613.16
  5. Step 5: Solve for x
    x = 869,613.16/1,210.10
  6. Step 6: Final answer
    x = 718.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.